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Leviafan [203]
3 years ago
7

Some bacteria live in the roots of plants like soybeans and peas. What is the role of these bacteria in the nitrogen cycle.

Biology
2 answers:
In-s [12.5K]3 years ago
6 0

Answer:D

Explanation: tbh I’m disappointed if u don’t know this

love history [14]3 years ago
3 0

Answer:The nitrogen present in the soil is not directly used by the bacteria. It can be used only when the nitrogen is converted into usable form. These bacteria convert  atmospheric nitrogen into ammonia, then nitrite which is then converted into nitrate. This nitrate is used by the roots of the plants like soybeans and peas. This is the role of bacteria present in the roots of the plant to convert atmospheric nitrogen into usable form that can be used by plants.

Explanation:

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Sav [38]

 A burn is damage to your body's tissues caused by heat, chemicals, electricity, sunlight, or radiation. Scalds from hot liquids and steam, building fires and flammable liquids and gases are the most common causes of burns. Another kind is an inhalation injury, caused by breathing smoke.

Hope This Helps!       Have A Nice Day!!

4 0
4 years ago
A diagram shows two models for the tempo of speciation. Model a shows a punctuated model. The species changes the most as it bra
Sloan [31]

Answer:

Species accumulate their unique features rapidly, then change little for the duration of the species.

Explanation:

8 0
3 years ago
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Do you think true water-conducting tissue is a derived character of either embryophytes or green algae? Why or why not?
ludmilkaskok [199]

Answer:

i think true water-conducting tissue is a derived character of green algae?

Explanation:

WHY?

Many characteristics of land plants also appear in algae like both are multi cellular, euks, photosynthetic autotrophs so are brown, red, and certain green algae, plants have cell walls made of cellulose and so do green algae

However, charophytes are the only present day algae that share these traits with land plants

1.Rings of cellulose-synthesizing proteins (circular rings of proteins in plasma membrane that make cellulose of cell wall)

2.Structure of flagellated sperm

3.Formation of a phragmoplast ( group of microtubules known as phragmoplast formes b/t daughter nuclei of a dividing cell, giving rise to a cell plate making cross wall that separates the daughter cells)

Comparisons of both nuclear and chloroplast genes point to charophytes as the closest living relatives of land plants

Land plants are not descended from modern charophytes, but share a common ancestor with modern charophytes

WHY NOT?

The origin of embryophytes, as these multicellular plants arose and conquered the land, was a pivotal event in the history of life on earth. Without embryophytes, there would be no animals or humans surviving on the land portion of our planet. The provide food, habitat, energy, oxygen, protection, and numerous vital other functions for the world's creatures. Human beings also benefit from the aesthetic beauty, medicines, and innumerable products derived from these diverse plants.

8 0
3 years ago
The amount of movement permitted by a particular joint is the basis for the functional classification of that joint. The amount
levacccp [35]

Answer:

The correct answer will be- true

Explanation:

In Human skeletal system, the point at which the two bones meet is known as the joint which is responsible for the stability of the body and the movement.

The joints can be classified on the basis of their structures and the functions (amount of movement).  

On the basis of movement, the bones are classified into  

1. Synarthroses (immovable joints)- the joints which do not move like sutures.

2. Amphiarthroses (slight movement)- the joints which slightly moves like symphyses

3. Diarthroses (free movement)- the joints which freely moves like synovial joints.

Thus, true is the correct answer.

7 0
3 years ago
The average volume of a red blood cell is 87 μ m 3 . The mean concentration of hemoglobin in red blood cells is 0.34 g ⋅ ml − 1
Dmitrij [34]

Answer:

A)

Concentration of hemoglobin = weight of the hemoglobin / total volume of RBCs

Therefore,

weight of the hemoglobin = concentration of the hemoglobin x Total volume of RBCs

weight of hemoglobin = (8.7x 10⁻¹¹ x 0.34) g

                                     = 2.96 x 10⁻¹¹ g

B)

molar mass of hemoglobin is 64500g/mol.

molar mass (m) = number of moles (n) x M,

∴ n = m/M

so number of moles in 2.96 x 10⁻¹¹ g of hemoglobin with molar mass 64500g/mole

= 2.96 x 10⁻¹¹ / 64500

= 4.5 x 10⁻¹⁶ moles

using Avogadro’s number to calculate the number of molecules from moles.

1 mole = 6.022 x 10²³ molecules

so, 4.5 x 10⁻¹⁶ moles

= 4.5 x 10⁻¹⁶ x 6.022 x 10²³

= 2.71 x 10⁸ molecules

Explanation:

Note: Average volume of a red blood cell = 87 μm³ = 8.7 x 10⁻¹¹ ml

        The mean concentration of hemoglobin in red cells = 0.34g/ml.

4 0
3 years ago
Read 2 more answers
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